Alvin's age is two times Elga's age. The sum of their ages is 81. What is Elga's age?

Every time you drive you will experience a combination of driving conditions and environments.

Bill works as a waiter and is keeping track of the tips he ears daily. about how much does bill have to earn in tips on sunday if he wants to average $22 a day? tips by day tips (dollars) monday tuesday wednesday thursday friday saturday $14 $22 $28 $36

Describe a situation that you could represent with the inequality x< 17